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. 2007 Oct;150(1):91–98. doi: 10.1111/j.1365-2249.2007.03462.x

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© 2007 British Society for Immunology

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Fig. 3 — Percentage of responders to purified protein derivative (PPD) and region of difference 1 (RD1) selected peptides among human immunodeficiency virus (HIV)-infected individuals with a positive response to cytomegalovirus (CMV) antigen. Individuals with in vitro responsiveness to CMV antigen by interferon (IFN)-γ enzyme-linked immunospot assay were selected. Among them, nine were with active tuberculosis and 16 without active tuberculosis; their IFN-γ response to PPD and RD1 selected peptides were analysed. The percentage of responders is reported for each group of individuals.